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Temperature- and time-dependent mechanical behavior of post-treated IN625 alloy processed by laser powder bed fusion

Alena Kreitcberg, Karine Inaekyan, Sylvain Turenne et Vladimir Brailovski

Article de revue (2019)

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Abstract

The microstructure and mechanical properties of IN625 alloy processed by laser powder bed fusion (LPBF) and then subjected to stress relief annealing, high temperature solution treatment, and hot isostatic pressing were studied. Tensile testing to failure was carried out in the 25–871 °C temperature range. Creep testing was conducted at 760 °C under 0.5–0.9 yield stress conditions. The results of the present study provided valuable insights into the static and creep properties of LPBF IN625 alloy, as compared to a wrought annealed alloy of similar composition. It was shown that at temperatures below 538 °C, the mechanical resistance and elongation to failure of the LPBF alloy were similar to those of its wrought counterpart, whereas at higher temperatures, the elongation to failure of the LPBF alloy became significantly lower than that of the wrought alloy. The solution-treated LPBF alloy exhibited significantly improved creep properties at 760 °C as compared to the wrought annealed alloy, especially under intermediate and low levels of stress.

Mots clés

nickel-based superalloys; additive manufacturing; high temperature mechanical properties; creep resistance

Sujet(s): 2000 Science et technologie des matériaux > 2000 Science et technologie des matériaux
2000 Science et technologie des matériaux > 2001 Structure, propriétés et essais des matériaux
2000 Science et technologie des matériaux > 2002 Transformation et fabrication des matériaux
2000 Science et technologie des matériaux > 2003 Métallurgie, métaux et alliages
Département: Département de génie mécanique
Organismes subventionnaires: CRSNG/NSERC, Consortium de recherche et d'innovation en aérospatiale au Québec (CRIAQ), Pratt & Whitney Canada, Fusia, Thermetco, FZ Engineering
URL de PolyPublie: https://publications.polymtl.ca/4978/
Titre de la revue: Journal of Manufacturing and Materials Processing (vol. 3, no 3)
Maison d'édition: MDPI
DOI: 10.3390/jmmp3030075
URL officielle: https://doi.org/10.3390/jmmp3030075
Date du dépôt: 13 juil. 2022 10:45
Dernière modification: 11 mai 2023 21:12
Citer en APA 7: Kreitcberg, A., Inaekyan, K., Turenne, S., & Brailovski, V. (2019). Temperature- and time-dependent mechanical behavior of post-treated IN625 alloy processed by laser powder bed fusion. Journal of Manufacturing and Materials Processing, 3(3), 75 (18 pages). https://doi.org/10.3390/jmmp3030075

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